Heney flettee



(No Model.)

H. FLETTBR.

NUT LOOK.

Patented May 15, 1883.

UNITED STATES HENRY FLETTER, OF KALAMAZOO, MICHIGAN, ASSIGNOR OF ONE-HALF DAVID LILIENFELD, OF SAME PLACE.

PATENT OFFICE.

NUT-LOCK.

SPECIFICATION forming part of Iietters Patent No. 277,474, dated May 15, 11883.

Application filed November 4, 1882. (No model.)

To all whom it may concern Be it known that I, HENRY FLETTER, a citizen of the United States, residing at Kalamazoo, county of Kalamazoo, State of Michigan, have invented a new and useful Nut-Lock, of which the following is a specification.

My invention has for its object an improved construction and combination of parts for looking nuts.

The general construction consists in a base plate or Washer having an extension-center corresponding in size with the nut, and forming a base for said nut to rest against, a locking-band located around said extension-center and the portion of the not engaging it, and a key located in open recesses in the nut and over the locking-band to hold saidband in place.

In the drawings forming a part of this specification, Figure 1 is a top view; Fig. 2, side elevation; Fig. 3, base-plate; Fig. 4, lockingband; Fig. 5, the key; and Fig. 6 a perspective view with the locking-band and key detached.

D is a nut having open recesses c c at opposite corners in the side of the nut next to the center extension, B, of the base-plate B. This base-plate B may be secured to the timber or metal through which the bolt 1? is located by screws, as in Figs. 1 and 6, or by other means; or when used as a washer lugs 12 may be formed on its side, Figs. 2and 3, and located in mortises adapted to receive them. The lockingband a is made a little higher than the thickness or heightof the center extension, B, Fig. 2. In the operation, the nut D, having been screwed onto bolt P and resting against center extension, B, as in Fig. 6, the

locking-band a is placed around said not and center extension,Fig.2, and the key 1 inserted over the locking-band and in recesses 0 c, as in Fig. 1. By means of the recesses c 0 being open, should the keyr become so rusted in as to be difficult to be removed, said key may be readily opened by bending the arms laterally out of said recess, and a new key may be employed for future use.

If desired, in lieu of key 1', for holding thelock ing-band a in place, spring-studs S S may be employed, said locking-band being pressegl be tween said studs and the nut and its base-plate, as in Fig. 2.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-- 1. The base-plate having a perforated center extension corresponding with the size of the nut used, in combination with a nut hav in gthe open key-recesses, and the locking-band and key, all substantially as described and shown.

2. A nut resting on 'a base extension corresponding with it in size,.in combination with a locking-band, and means for holding said band in place, to efiect the objects set forth, substantially as described.

3. A perforated base plate or washer provided with a center extension, and means to prevent it from turning, in combination with a nut having the corner recesses, a lockingband, and means for holding said band in place, substantially as set forth.

HENRY FLETTER.

Witnesses DAVID LILIENFELD, J. BEROLZHEIMER. 

